Home / 89,835.21-123,949.71-65,920.32

Finding the Fourth Proportional to 89,835.21, 123,949.71 and 65,920.32

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Solution

The fourth proportional to 89,835.21, 123,949.71 and 65,920.32 is: 90,953.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,835.21 : 123,949.71 = 65,920.32 : x
  2. Step 2: Convert to fraction form
    89,835.21/123,949.71 = 65,920.32/x
  3. Step 3: Cross multiply
    89,835.21x = 123,949.71 × 65,920.32
  4. Step 4: Simplify right side
    89,835.21x = 8,170,804,547.11
  5. Step 5: Solve for x
    x = 8,170,804,547.11/89,835.21
  6. Step 6: Final answer
    x = 90,953.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.